As we all know, many businesses can not be in a fixed office location to complete, such as the overhaul of power lines, gas pipes (water pipes) trouble-shooting, taxi management, field exploration and surveying, to effectively accomplish these tasks, Many staff members should stay away from a fixed office location, for mobile office (operations). The more our society develops, people's mobility office space will be larger, according to incomplete statistics, in the world today there are nearly 55 million more persons not in a fixed office, but outside the office engaged in mobile work.
Mobility and the "location" feature as the most prominent feature of business information, pure and simple mobile GIS have been unable to satisfy people's information processing needs of these enormous crowds urgently requires a kind of mobility and be able to 4A ( Anytime, Anywhere, Anybody, Anything) approach to the work of information systems, that is, at any time, anywhere, for any person, for any thing can be the use of information systems. In such a demand-driven, the birth of a geographic information system based on mobile (Mobile GIS, referred to as MGIS) of the location-based services LBS (Location Based Service).
GIS-based mobile LBS implemented in two ways: The first one is through the GSM network access to mobile phone user's location information (latitude and longitude coordinates), then the location information such as location-based service center to request location-based services, the service center in accordance with the user's customized, In the GIS platform support, query the user a variety of venues in the vicinity of information: the user where the nearest hospital from the user where the user is surrounded by what banks, how to get from here to there, the user's friends are now the location of emergency relief, the elderly tracking, fleet management, and a short message sent to the user. The second is customized according to user needs, when a user when the application for location-based services, to users a visual map, taking into account the network capacity and other requirements, the user can be sent to the compressed vector data or raster image .
Location-based services from the content can be broadly divided into three kinds: the first one is only available location information, including inquiries on their own position or the other's position, the most obvious example of this is Monternet. The second is a navigation service with computing technology, and voice processing technology to provide users with a practical road routes, such as car navigation services. The third is a combination of related information, location-based services, which can provide information on points of detail as well as the surrounding information.
Location-based services in the transport sector a number of facts indicate that the mobile device to communicate critical information in a timely manner to the traffic flow and traffic flow will be participating in the crowd, which for the improvement of transportation is helpful. For example, if the mobile user to know "Where am I" "I am far away from there," "how do I get there" "go there's traffic and current traffic conditions," and other information, will greatly reduce the number of travel groups, travel time, trip distance and the number of stops to improve the quality of people's transportation, and help select more appropriate means of transport.